部署Percona XtraDB Cluster高可用和多Master集群
环境情况：
系统：CentOS release 6.4 (Final)，2.6.32-358.el6.x86_64
PXC版本：二进制版本，5.5.37-35.0-25.10 Percona XtraDB Cluster binary (GPL) 5.5.37-25.10, Revision 756, wsrep_25.10.r3985
集群节点：
在每个节点安装PXC：
tar -xvf Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64.tar.gz -C /opt ln -s /opt/Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64 /opt/PXC
配置节点mariadb01：
简单my.cnf配置文件
[mysqld] datadir=/opt/PXC/data binlog_format=ROW #存储引擎设置为innodb，myisam仅仅测试支持 default-storage-engine=innodb #指定innodb 自增长列锁模式，2为交叉锁模式， 多个语句能同时执行 innodb_autoinc_lock_mode=2 innodb_locks_unsafe_for_binlog=1 query_cache_size=0 query_cache_type=0 bind-address=0.0.0.0 #指定Galera库文件，PXC自带该库文件，mariadb galera需要安装galera wsrep_provider=/opt/PXC/lib/libgalera_smm.so wsrep_cluster_name="my_wsrep_cluster" #指定集群每个节点的连接地址 wsrep_cluster_address="gcomm://10.0.60.104,10.0.60.105,10.0.60.106" wsrep_slave_threads=1 wsrep_certify_nonPK=1 wsrep_max_ws_rows=131072 wsrep_max_ws_size=1073741824 wsrep_debug=1 wsrep_convert_LOCK_to_trx=0 wsrep_retry_autocommit=1 wsrep_auto_increment_control=1 wsrep_drupal_282555_workaround=0 wsrep_causal_reads=0 wsrep_notify_cmd= #指定SST方式，支持rsync(最快，需要锁表)，mysqldump和xtrabackup，从5.5.33-23.7.6起支持xtrabackup-v2 wsrep_sst_method=xtrabackup-v2 #SST的认证方式 wsrep_sst_auth=sstuser:sstuser
启动mariadb01节点：
./bin/mysqld_safe --defaults-file=my.cnf --wsrep-cluster-address="gcomm://" &
创建SST用户和进行相应的授权：
DELETE FROM mysql.user WHERE user=''; GRANT RELOAD, LOCK TABLES, REPLICATION CLIENT ON *.* TO 'sstuser'@'localhost' IDENTIFIED BY 'sstuser';; FLUSH PRIVILEGES;
配置节点mariadb02：
mysql> \! cat /opt/PXC/my.cnf |grep -v ^#|grep -v ^$
[mysqld] datadir=/opt/PXC/data binlog_format=ROW default-storage-engine=innodb innodb_autoinc_lock_mode=2 innodb_locks_unsafe_for_binlog=1 query_cache_size=0 query_cache_type=0 bind-address=0.0.0.0 wsrep_provider=/opt/PXC/lib/libgalera_smm.so wsrep_cluster_name="my_wsrep_cluster" wsrep_cluster_address="gcomm://10.0.60.104,10.0.60.105,10.0.60.106" wsrep_slave_threads=1 wsrep_certify_nonPK=1 wsrep_max_ws_rows=131072 wsrep_max_ws_size=1073741824 wsrep_debug=0 wsrep_convert_LOCK_to_trx=0 wsrep_retry_autocommit=1 wsrep_auto_increment_control=1 wsrep_drupal_282555_workaround=0 wsrep_causal_reads=0 wsrep_notify_cmd= wsrep_sst_method=xtrabackup-v2 wsrep_sst_auth=sstuser:sstuser
启动mariadb02节点：
./bin/mysqld_safe --defaults-file=my.cnf &
配置节点mariadb03：
mysql> \! cat /opt/PXC/my.cnf |grep -v ^#|grep -v ^$
[mysqld] binlog_format=ROW default-storage-engine=innodb innodb_autoinc_lock_mode=2 innodb_locks_unsafe_for_binlog=1 query_cache_size=0 query_cache_type=0 bind-address=0.0.0.0 wsrep_provider=/opt/PXC/lib/libgalera_smm.so wsrep_cluster_name="my_wsrep_cluster" wsrep_cluster_address="gcomm://10.0.60.104,10.0.60.105,10.0.60.106" wsrep_slave_threads=1 wsrep_certify_nonPK=1 wsrep_max_ws_rows=131072 wsrep_max_ws_size=1073741824 wsrep_debug=0 wsrep_convert_LOCK_to_trx=0 wsrep_retry_autocommit=1 wsrep_auto_increment_control=1 wsrep_drupal_282555_workaround=0 wsrep_causal_reads=0 wsrep_notify_cmd= wsrep_sst_method=xtrabackup wsrep_sst_auth=sstuser:sstuser
启动mariadb03节点：
./bin/mysqld_safe --defaults-file=my.cnf &
检查状态：
mariadb01>show status like 'wsrep%';
+----------------------------+----------------------------------------------------+
| Variable_name | Value |
+----------------------------+----------------------------------------------------+
| wsrep_local_state_uuid | 961de113-ed93-11e3-95a0-934e3df4463f |
| wsrep_protocol_version | 4 |
| wsrep_last_committed | 8 |
| wsrep_replicated | 1 |
| wsrep_replicated_bytes | 180 |
| wsrep_received | 5 |
| wsrep_received_bytes | 798 |
| wsrep_local_commits | 1 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_avg | 0.000000 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_avg | 0.000000 |
| wsrep_flow_control_paused | 0.000000 |
| wsrep_flow_control_sent | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_cert_deps_distance | 1.000000 |
| wsrep_apply_oooe | 0.000000 |
| wsrep_apply_oool | 0.000000 |
| wsrep_apply_window | 0.000000 |
| wsrep_commit_oooe | 0.000000 |
| wsrep_commit_oool | 0.000000 |
| wsrep_commit_window | 0.000000 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_cert_index_size | 4 |
| wsrep_causal_reads | 0 |
| wsrep_incoming_addresses | 10.0.60.104:3306,10.0.60.105:3306,10.0.60.106:3306 |
| wsrep_cluster_conf_id | 3 |
| wsrep_cluster_size | 3 |
| wsrep_cluster_state_uuid | 961de113-ed93-11e3-95a0-934e3df4463f |
| wsrep_cluster_status | Primary |
| wsrep_connected | ON |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 0 |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <[email protected]> |
| wsrep_provider_version | 2.10(r175) |
| wsrep_ready | ON |
+----------------------------+----------------------------------------------------+
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